以正庚醛 、 硫代硫酸钠和溴代正丁烷为原料,合成了正庚醛正丁硫醇缩醛.The heptanal butyl mercaptan was synthesized with heptanal, sodium thiosulfate and 1 bromobutane as raw materials.目的研究以庚醛和原甲酸三乙酯为原料制备庚醛二乙缩醛的工艺条件.Aim Enanthal diethyl acetal is prepared ...
尽管他身形庞大，移动起来还是很灵巧。Despite his bulk he moved lightly on his feet.这个炉子底下带轮子，很容易四处移动。The stove is on wheels so it can be shuffled around easily.大多数移动机器人仍处在设计阶段。Most mobile robots are still in the design stage....
He is cagey about what he was paid for the business.他对自己在这桩买卖中所得的报酬不愿多提。Tony is very cagey about his family.托尼对自己家的事讳莫如深。The cagey fox could not be easily trapped by the farmer.那只狡猾的狐狸不会轻易落入农夫的陷阱....
At stake are more than 20,000 jobs in Britain's aerospace sector.英国航天部门2万多人面临失业的危险。At stake is the success or failure of world trade talks.世界贸易谈判正处于成败的重要关头。The life of the sick man is at stake.病人的生命在危急中....
Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.努力过，失败过，没关系，屡战屡败，屡败屡战，每一次失败都比上一次更好。Sometimes things have to fall apart to make way for better things.有时候要到达谷底，才会慢慢变好。He'd phoned Laura to see if...
Lunar probe has successfully passed the test temperature.月球探测器已经成功通过恒温测试.In the new century, impressive achievements have been scored in manned spaceflight and lunar probe projects.进入新世纪, 我们又在载人航天与探月工程领域取得了令世人瞩目的重大进展....
Check for eyestrain by putting your hand to your forehead a salute.方法是将手放在前额呈敬礼状.To reduce eyestrain, we are going to install anti - glare screens on all of the company's computers.?为了减轻眼疲劳, 我们将在公司的每一台计算机上都安装防辐射屏.Ch...